Loading raw and complete email source into a QMessage

Hello,
I've been reading through the documentation of QMessage and QMessageManager but I wasn't able to find any method that allows loading the source of a message out of a plain text file such as an .eml file - via a QString or a QTextStream or whatever, of course. To the best of my searches on the web and in these forums I wasn't able to find any meaningful discussion about it.

Could anybody confirm that there is no way to do such an operation?

Any suggestion about how to work around this eventually missing feature would be more than welcome.